Chapter 29

A widen PDL, membrane will appear radiolucent wider by how much at the roots of the tooth

0.5.

Type of radiograph shows the pts mouth, jaw, and surrounding structures

3D

Handheld intraoral units are preset to

60 kilov 2ma's

Advantage of digital radiography

Adjust brightness & contrast

Direct digital system for intraoral exposure what do you do if an error occurs

Adjust sensor

Radiopaque peaks are between what on radiographs

Alveolar crest

Dilaceration is what kind of root

Bent root of posterior tooth

When taking a Panoramic of the pt head is positioned too far forward it will appear

Blurred on the anterior teeth

Do patients have to sit or stand during a pano exposure

Both

Does an intensifying screen intensify or decrease exposure of radiation?

Decrease

Cementum is slightly less radiopauge then

Dentin

What type of radiography allows the dentist to display an intro oral radiograph on computer screen without processing the dental film

Digital radiology

Type of apron should be used on the pt during a pano

Double sided w/o w thyroid collar

Assistant's responsibility

Educating patient on importance of radiography

Advantage of radiography

Eliminates dark room and processing equipment

TMJ selection control

Enables 3-second exposure on extraoral radiograph machine

Most radiopaque part of tooth

Enamel

What is the most radiopauge structure of the tooth

Enamel

True or false, direct, digital imaging converge traditional x-rays to digital images

False

Cassette film holders

Flat hard containers or flexible thin sleeves

What is a 3-D curve zone, gentle arches position to achieve the sharpest image

Focal trough

The type of radiographic, unit that incorporates shielding

Handheld intro oral unit

How must extraoral film be loaded?

In a dark room under Safelite conditions

Image method is storage phosphor imaging

Indirect

Digital radiology allows the dentist to take _____ & ______ radiographs

Intraoral and extraoral

Dentin and cementum are slightly

Less radiopauge

Decay not visible on x-ray

Moderate decay

When taking the direct digital technique does a cassette needs to be loaded into the x-ray machine before taking a Pano

No

Ideal outcome from coin test

No indication of coin on processed film

What type of x-ray is the infraorbital foremen usually seen

Pano

How should a patient Frankfurt plane be positioned while taking a Pano?

Parallel to the floor

Inspector of dental radiation equipment

Physicist

How will the patient's head be positioned if the mandibular arch will appear as exaggerated on an upward panoramic?

Position down ward

X-ray output test

Quality assurance test for beam safety for patient

Pt refusal to take xrays

Record refusal on chart and have pt sign it

Indirect digital imaging what should be removed before exposure

Remove image plate

Restoration and decayed area

Restoration has fine even lines on radiograph

How dosalivary stones appear on the radiograph?

Round radiopaque appearance

How do pope stones appear on radiographs?

Round radiopauge areas

Radiographer distance

Should be at least 6 feet from patient or behind a shield

When taking the trans cranial TMJ radiograph, the x-ray is positioned on what on the patient

Side of head

When using 3-D imaging, the image is usually captured in a_______ rotation around the patient's head

Single

If a patient has 25% bone loss at the coronal 1/3 without any tooth loss what stage of periodontitis is that?

Stage two periodontitis

Pano radiography is based on the principle of

Tomography

What can cause a dark radiolucent area above the APICES of the maxillary teeth when taking a Panogram

Tongue not resting on roof of mouth during exposure

Type of radiography being described as x-rays strike film and image recorded on film

Traditional

What does it mean when a tumor of Piers radiopaque on an x-ray?

Tumor denser than original tissue

X-ray of tooth with acrylic crown

Visible prepared tooth structure, but acrylic crown not visible

In digital radiography, is the x-ray sensors typically thicker than the x-ray packets

Yes

Is it considered a HIPP a violation if x-rays are in a location where other patients can view them

Yes

Pano radiographs view what

fractures, bone sinuses, dentition, TMJ, and erupted teeth

Posterior anterior radiograph should be positioned

in front of patient's face

Intraoral digital exposure is placed where

in oral cavity

Extra oral radiographs are used to identify_______ areas of the skull

large

Amalgam restorations compared to cast metal crowns

larger with smoother margins

Maxillary tuberosity, appears radiopauge boney protuberance on the

posterior to last molar

Cephalometric Radiograph is used to access the patients

skeletal profile and structure